--- /dev/null
+\r
+/*\r
+ * uce-dirent.h - operating system independent dirent implementation\r
+ * \r
+ * Copyright (C) 1998-2002 Toni Ronkko\r
+ * \r
+ * Permission is hereby granted, free of charge, to any person obtaining\r
+ * a copy of this software and associated documentation files (the\r
+ * ``Software''), to deal in the Software without restriction, including\r
+ * without limitation the rights to use, copy, modify, merge, publish,\r
+ * distribute, sublicense, and/or sell copies of the Software, and to\r
+ * permit persons to whom the Software is furnished to do so, subject to\r
+ * the following conditions:\r
+ * \r
+ * The above copyright notice and this permission notice shall be included\r
+ * in all copies or substantial portions of the Software.\r
+ * \r
+ * THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.\r
+ * IN NO EVENT SHALL TONI RONKKO BE LIABLE FOR ANY CLAIM, DAMAGES OR\r
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,\r
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR\r
+ * OTHER DEALINGS IN THE SOFTWARE.\r
+ * \r
+ * \r
+ * May 28 1998, Toni Ronkko <tronkko@messi.uku.fi>\r
+ *\r
+ * $Id: uce-dirent.h,v 1.7 2002/05/13 10:48:35 tr Exp $\r
+ *\r
+ * $Log: uce-dirent.h,v $\r
+ * Revision 1.7 2002/05/13 10:48:35 tr\r
+ * embedded some source code directly to the header so that no source\r
+ * modules need to be included in the MS Visual C project using the\r
+ * interface, removed all the dependencies to other headers of the `uce'\r
+ * library so that the header can be made public\r
+ *\r
+ * Revision 1.6 2002/04/12 16:22:04 tr\r
+ * Unified Compiling Environment (UCE) replaced `std' library\r
+ *\r
+ * Revision 1.5 2001/07/20 16:33:40 tr\r
+ * moved to `std' library and re-named defines accordingly\r
+ *\r
+ * Revision 1.4 2001/07/10 16:47:18 tronkko\r
+ * revised comments\r
+ *\r
+ * Revision 1.3 2001/01/11 13:16:43 tr\r
+ * using ``uce-machine.h'' for finding out defines such as `FREEBSD'\r
+ *\r
+ * Revision 1.2 2000/10/08 16:00:41 tr\r
+ * copy of FreeBSD man page\r
+ *\r
+ * Revision 1.1 2000/07/10 05:53:16 tr\r
+ * Initial revision\r
+ *\r
+ * Revision 1.2 1998/07/19 18:29:14 tr\r
+ * Added error reporting capabilities and some asserts.\r
+ *\r
+ * Revision 1.1 1998/07/04 16:27:51 tr\r
+ * Initial revision\r
+ *\r
+ * \r
+ * MSVC 1.0 scans automatic dependencies incorrectly when your project\r
+ * contains this very header. The problem is that MSVC cannot handle\r
+ * include directives inside #if..#endif block those are never entered.\r
+ * Since this header ought to compile in many different operating systems,\r
+ * there had to be several conditional blocks that are compiled only in\r
+ * operating systems for what they were designed for. MSVC 1.0 cannot\r
+ * handle inclusion of sys/dir.h in a part that is compiled only in Apollo\r
+ * operating system. To fix the problem you need to insert DIR.H into\r
+ * SYSINCL.DAT located in MSVC\BIN directory and restart visual C++.\r
+ * Consult manuals for more informaton about the problem.\r
+ *\r
+ * Since many UNIX systems have dirent.h we assume to have one also.\r
+ * However, if your UNIX system does not have dirent.h you can download one\r
+ * for example at: http://ftp.uni-mannheim.de/ftp/GNU/dirent/dirent.tar.gz.\r
+ * You can also see if you have one of dirent.h, direct.h, dir.h, ndir.h,\r
+ * sys/dir.h and sys/ndir.h somewhere. Try defining HAVE_DIRENT_H,\r
+ * HAVE_DIRECT_H, HAVE_DIR_H, HAVE_NDIR_H, HAVE_SYS_DIR_H and\r
+ * HAVE_SYS_NDIR_H according to the files found.\r
+ */\r
+#ifndef DIRENT_H\r
+#define DIRENT_H\r
+#define DIRENT_H_INCLUDED\r
+\r
+/* find out platform */\r
+#if defined(MSDOS) /* MS-DOS */\r
+#elif defined(__MSDOS__) /* Turbo C/Borland */\r
+# define MSDOS\r
+#elif defined(__DOS__) /* Watcom */\r
+# define MSDOS\r
+#endif\r
+\r
+#if defined(WIN32) /* MS-Windows */\r
+#elif defined(__NT__) /* Watcom */\r
+# define WIN32\r
+#elif defined(_WIN32) /* Microsoft */\r
+# define WIN32\r
+#elif defined(__WIN32__) /* Borland */\r
+# define WIN32\r
+#endif\r
+\r
+/*\r
+ * See what kind of dirent interface we have unless autoconf has already\r
+ * determinated that.\r
+ */\r
+#if !defined(HAVE_DIRENT_H) && !defined(HAVE_DIRECT_H) && !defined(HAVE_SYS_DIR_H) && !defined(HAVE_NDIR_H) && !defined(HAVE_SYS_NDIR_H) && !defined(HAVE_DIR_H)\r
+# if defined(_MSC_VER) /* Microsoft C/C++ */\r
+ /* no dirent.h */\r
+# elif defined(__BORLANDC__) /* Borland C/C++ */\r
+# define HAVE_DIRENT_H\r
+# define VOID_CLOSEDIR\r
+# elif defined(__TURBOC__) /* Borland Turbo C */\r
+ /* no dirent.h */\r
+# elif defined(__WATCOMC__) /* Watcom C/C++ */\r
+# define HAVE_DIRECT_H\r
+# elif defined(__apollo) /* Apollo */\r
+# define HAVE_SYS_DIR_H\r
+# elif defined(__hpux) /* HP-UX */\r
+# define HAVE_DIRENT_H\r
+# elif defined(__alpha) || defined(__alpha__) /* Alpha OSF1 */\r
+# error "not implemented"\r
+# elif defined(__sgi) /* Silicon Graphics */\r
+# define HAVE_DIRENT_H\r
+# elif defined(sun) || defined(_sun) /* Sun Solaris */\r
+# define HAVE_DIRENT_H\r
+# elif defined(__FreeBSD__) /* FreeBSD */\r
+# define HAVE_DIRENT_H\r
+# elif defined(__linux__) /* Linux */\r
+# define HAVE_DIRENT_H\r
+# elif defined(__GNUC__) /* GNU C/C++ */\r
+# define HAVE_DIRENT_H\r
+# else\r
+# error "not implemented"\r
+# endif\r
+#endif\r
+\r
+/* include proper interface headers */\r
+#if defined(HAVE_DIRENT_H)\r
+# include <dirent.h>\r
+# ifdef FREEBSD\r
+# define NAMLEN(dp) ((int)((dp)->d_namlen))\r
+# else\r
+# define NAMLEN(dp) ((int)(strlen((dp)->d_name)))\r
+# endif\r
+\r
+#elif defined(HAVE_NDIR_H)\r
+# include <ndir.h>\r
+# define NAMLEN(dp) ((int)((dp)->d_namlen))\r
+\r
+#elif defined(HAVE_SYS_NDIR_H)\r
+# include <sys/ndir.h>\r
+# define NAMLEN(dp) ((int)((dp)->d_namlen))\r
+\r
+#elif defined(HAVE_DIRECT_H)\r
+# include <direct.h>\r
+# define NAMLEN(dp) ((int)((dp)->d_namlen))\r
+\r
+#elif defined(HAVE_DIR_H)\r
+# include <dir.h>\r
+# define NAMLEN(dp) ((int)((dp)->d_namlen))\r
+\r
+#elif defined(HAVE_SYS_DIR_H)\r
+# include <sys/types.h>\r
+# include <sys/dir.h>\r
+# ifndef dirent\r
+# define dirent direct\r
+# endif\r
+# define NAMLEN(dp) ((int)((dp)->d_namlen))\r
+\r
+#elif defined(MSDOS) || defined(WIN32)\r
+\r
+ /* figure out type of underlaying directory interface to be used */\r
+# if defined(WIN32)\r
+# define DIRENT_WIN32_INTERFACE\r
+# elif defined(MSDOS)\r
+# define DIRENT_MSDOS_INTERFACE\r
+# else\r
+# error "missing native dirent interface"\r
+# endif\r
+\r
+ /*** WIN32 specifics ***/\r
+# if defined(DIRENT_WIN32_INTERFACE)\r
+# include <windows.h>\r
+# if !defined(DIRENT_MAXNAMLEN)\r
+# define DIRENT_MAXNAMLEN (MAX_PATH)\r
+# endif\r
+\r
+\r
+ /*** MS-DOS specifics ***/\r
+# elif defined(DIRENT_MSDOS_INTERFACE)\r
+# include <dos.h>\r
+\r
+ /* Borland defines file length macros in dir.h */\r
+# if defined(__BORLANDC__)\r
+# include <dir.h>\r
+# if !defined(DIRENT_MAXNAMLEN)\r
+# define DIRENT_MAXNAMLEN ((MAXFILE)+(MAXEXT))\r
+# endif\r
+# if !defined(_find_t)\r
+# define _find_t find_t\r
+# endif\r
+\r
+ /* Turbo C defines ffblk structure in dir.h */\r
+# elif defined(__TURBOC__)\r
+# include <dir.h>\r
+# if !defined(DIRENT_MAXNAMLEN)\r
+# define DIRENT_MAXNAMLEN ((MAXFILE)+(MAXEXT))\r
+# endif\r
+# define DIRENT_USE_FFBLK\r
+\r
+ /* MSVC */\r
+# elif defined(_MSC_VER)\r
+# if !defined(DIRENT_MAXNAMLEN)\r
+# define DIRENT_MAXNAMLEN (12)\r
+# endif\r
+\r
+ /* Watcom */\r
+# elif defined(__WATCOMC__)\r
+# if !defined(DIRENT_MAXNAMLEN)\r
+# if defined(__OS2__) || defined(__NT__)\r
+# define DIRENT_MAXNAMLEN (255)\r
+# else\r
+# define DIRENT_MAXNAMLEN (12)\r
+# endif\r
+# endif\r
+\r
+# endif\r
+# endif\r
+\r
+ /*** generic MS-DOS and MS-Windows stuff ***/\r
+# if !defined(NAME_MAX) && defined(DIRENT_MAXNAMLEN)\r
+# define NAME_MAX DIRENT_MAXNAMLEN\r
+# endif\r
+# if NAME_MAX < DIRENT_MAXNAMLEN\r
+# error "assertion failed: NAME_MAX >= DIRENT_MAXNAMLEN"\r
+# endif\r
+\r
+\r
+ /*\r
+ * Substitute for real dirent structure. Note that `d_name' field is a\r
+ * true character array although we have it copied in the implementation\r
+ * dependent data. We could save some memory if we had declared `d_name'\r
+ * as a pointer refering the name within implementation dependent data.\r
+ * We have not done that since some code may rely on sizeof(d_name) to be\r
+ * something other than four. Besides, directory entries are typically so\r
+ * small that it takes virtually no time to copy them from place to place.\r
+ */\r
+ typedef struct dirent {\r
+ char d_name[NAME_MAX + 1];\r
+\r
+ /*** Operating system specific part ***/\r
+# if defined(DIRENT_WIN32_INTERFACE) /*WIN32*/\r
+ WIN32_FIND_DATA data;\r
+# elif defined(DIRENT_MSDOS_INTERFACE) /*MSDOS*/\r
+# if defined(DIRENT_USE_FFBLK)\r
+ struct ffblk data;\r
+# else\r
+ struct _find_t data;\r
+# endif\r
+# endif\r
+ } dirent;\r
+\r
+ /* DIR substitute structure containing directory name. The name is\r
+ * essential for the operation of ``rewinndir'' function. */\r
+ typedef struct DIR {\r
+ char *dirname; /* directory being scanned */\r
+ dirent current; /* current entry */\r
+ int dirent_filled; /* is current un-processed? */\r
+\r
+ /*** Operating system specific part ***/\r
+# if defined(DIRENT_WIN32_INTERFACE)\r
+ HANDLE search_handle;\r
+# elif defined(DIRENT_MSDOS_INTERFACE)\r
+# endif\r
+ } DIR;\r
+\r
+# ifdef __cplusplus\r
+extern "C" {\r
+# endif\r
+\r
+/* supply prototypes for dirent functions */\r
+static DIR *opendir (const char *dirname);\r
+static struct dirent *readdir (DIR *dirp);\r
+static int closedir (DIR *dirp);\r
+static void rewinddir (DIR *dirp);\r
+\r
+/*\r
+ * Implement dirent interface as static functions so that the user does not\r
+ * need to change his project in any way to use dirent function. With this\r
+ * it is sufficient to include this very header from source modules using\r
+ * dirent functions and the functions will be pulled in automatically.\r
+ */\r
+#include <stdio.h>\r
+#include <stdlib.h>\r
+#include <string.h>\r
+#include <assert.h>\r
+#include <errno.h>\r
+\r
+/* use ffblk instead of _find_t if requested */\r
+#if defined(DIRENT_USE_FFBLK)\r
+# define _A_ARCH (FA_ARCH)\r
+# define _A_HIDDEN (FA_HIDDEN)\r
+# define _A_NORMAL (0)\r
+# define _A_RDONLY (FA_RDONLY)\r
+# define _A_SUBDIR (FA_DIREC)\r
+# define _A_SYSTEM (FA_SYSTEM)\r
+# define _A_VOLID (FA_LABEL)\r
+# define _dos_findnext(dest) findnext(dest)\r
+# define _dos_findfirst(name,flags,dest) findfirst(name,dest,flags)\r
+#endif\r
+\r
+static int _initdir (DIR *p);\r
+static const char *_getdirname (const struct dirent *dp);\r
+static void _setdirname (struct DIR *dirp);\r
+\r
+/*\r
+ * <function name="opendir">\r
+ * <intro>open directory stream for reading\r
+ * <syntax>DIR *opendir (const char *dirname);\r
+ *\r
+ * <desc>Open named directory stream for read and return pointer to the\r
+ * internal working area that is used for retrieving individual directory\r
+ * entries. The internal working area has no fields of your interest.\r
+ *\r
+ * <ret>Returns a pointer to the internal working area or NULL in case the \r
+ * directory stream could not be opened. Global `errno' variable will set\r
+ * in case of error as follows:\r
+ *\r
+ * <table>\r
+ * [EACESS |Permission denied.\r
+ * [EMFILE |Too many open files used by the process.\r
+ * [ENFILE |Too many open files in system.\r
+ * [ENOENT |Directory does not exist.\r
+ * [ENOMEM |Insufficient memory.\r
+ * [ENOTDIR |dirname does not refer to directory. This value is not\r
+ * reliable on MS-DOS and MS-Windows platforms. Many\r
+ * implementations return ENOENT even when the name refers to a\r
+ * file.]\r
+ * </table>\r
+ * </function>\r
+ */\r
+static DIR *opendir(const char *dirname)\r
+{\r
+ DIR *dirp;\r
+ assert (dirname != NULL);\r
+ \r
+ dirp = (DIR*)malloc (sizeof (struct DIR));\r
+ if (dirp != NULL) {\r
+ char *p;\r
+ \r
+ /* allocate room for directory name */\r
+ dirp->dirname = (char*) malloc (strlen (dirname) + 1 + strlen ("\\*.*"));\r
+ if (dirp->dirname == NULL) {\r
+ /* failed to duplicate directory name. errno set by malloc() */\r
+ free (dirp);\r
+ return NULL;\r
+ }\r
+ /* Copy directory name while appending directory separator and "*.*".\r
+ * Directory separator is not appended if the name already ends with\r
+ * drive or directory separator. Directory separator is assumed to be\r
+ * '/' or '\' and drive separator is assumed to be ':'. */\r
+ strcpy (dirp->dirname, dirname);\r
+ p = strchr (dirp->dirname, '\0');\r
+ if (dirp->dirname < p &&\r
+ *(p - 1) != '\\' && *(p - 1) != '/' && *(p - 1) != ':')\r
+ {\r
+ strcpy (p++, "\\");\r
+ }\r
+# ifdef DIRENT_WIN32_INTERFACE\r
+ strcpy (p, "*"); /*scan files with and without extension in win32*/\r
+# else\r
+ strcpy (p, "*.*"); /*scan files with and without extension in DOS*/\r
+# endif\r
+\r
+ /* open stream */\r
+ if (_initdir (dirp) == 0) {\r
+ /* initialization failed */\r
+ free (dirp->dirname);\r
+ free (dirp);\r
+ return NULL;\r
+ }\r
+ }\r
+ return dirp;\r
+}\r
+\r
+\r
+/*\r
+ * <function name="readdir">\r
+ * <intro>read a directory entry\r
+ * <syntax>struct dirent *readdir (DIR *dirp);\r
+ *\r
+ * <desc>Read individual directory entry and return pointer to a structure\r
+ * containing the name of the entry. Individual directory entries returned\r
+ * include normal files, sub-directories, pseudo-directories "." and ".."\r
+ * and also volume labels, hidden files and system files in MS-DOS and\r
+ * MS-Windows. You might want to use stat(2) function to determinate which\r
+ * one are you dealing with. Many dirent implementations already contain\r
+ * equivalent information in dirent structure but you cannot depend on\r
+ * this.\r
+ *\r
+ * The dirent structure contains several system dependent fields that\r
+ * generally have no interest to you. The only interesting one is char\r
+ * d_name[] that is also portable across different systems. The d_name\r
+ * field contains the name of the directory entry without leading path.\r
+ * While d_name is portable across different systems the actual storage\r
+ * capacity of d_name varies from system to system and there is no portable\r
+ * way to find out it at compile time as different systems define the\r
+ * capacity of d_name with different macros and some systems do not define\r
+ * capacity at all (besides actual declaration of the field). If you really\r
+ * need to find out storage capacity of d_name then you might want to try\r
+ * NAME_MAX macro. The NAME_MAX is defined in POSIX standard althought\r
+ * there are many MS-DOS and MS-Windows implementations those do not define\r
+ * it. There are also systems that declare d_name as "char d_name[1]" and\r
+ * then allocate suitable amount of memory at run-time. Thanks to Alain\r
+ * Decamps (Alain.Decamps@advalvas.be) for pointing it out to me.\r
+ *\r
+ * This all leads to the fact that it is difficult to allocate space\r
+ * for the directory names when the very same program is being compiled on\r
+ * number of operating systems. Therefore I suggest that you always\r
+ * allocate space for directory names dynamically.\r
+ *\r
+ * <ret>\r
+ * Returns a pointer to a structure containing name of the directory entry\r
+ * in `d_name' field or NULL if there was an error. In case of an error the\r
+ * global `errno' variable will set as follows:\r
+ *\r
+ * <table>\r
+ * [EBADF |dir parameter refers to an invalid directory stream. This value\r
+ * is not set reliably on all implementations.]\r
+ * </table>\r
+ * </function>\r
+ */\r
+static struct dirent *\r
+readdir (DIR *dirp)\r
+{\r
+ assert(dirp != NULL);\r
+ if (dirp == NULL) {\r
+ errno = EBADF;\r
+ return NULL;\r
+ }\r
+\r
+#if defined(DIRENT_WIN32_INTERFACE)\r
+ if (dirp->search_handle == INVALID_HANDLE_VALUE) {\r
+ /* directory stream was opened/rewound incorrectly or it ended normally */\r
+ errno = EBADF;\r
+ return NULL;\r
+ }\r
+#endif\r
+\r
+ if (dirp->dirent_filled != 0) {\r
+ /*\r
+ * Directory entry has already been retrieved and there is no need to\r
+ * retrieve a new one. Directory entry will be retrieved in advance\r
+ * when the user calls readdir function for the first time. This is so\r
+ * because real dirent has separate functions for opening and reading\r
+ * the stream whereas Win32 and DOS dirents open the stream\r
+ * automatically when we retrieve the first file. Therefore, we have to\r
+ * save the first file when opening the stream and later we have to\r
+ * return the saved entry when the user tries to read the first entry.\r
+ */\r
+ dirp->dirent_filled = 0;\r
+ } else {\r
+ /* fill in entry and return that */\r
+#if defined(DIRENT_WIN32_INTERFACE)\r
+ if (FindNextFile (dirp->search_handle, &dirp->current.data) == FALSE) {\r
+ /* Last file has been processed or an error occured */\r
+ FindClose (dirp->search_handle);\r
+ dirp->search_handle = INVALID_HANDLE_VALUE;\r
+ errno = ENOENT;\r
+ return NULL;\r
+ }\r
+\r
+# elif defined(DIRENT_MSDOS_INTERFACE)\r
+ if (_dos_findnext (&dirp->current.data) != 0) {\r
+ /* _dos_findnext and findnext will set errno to ENOENT when no\r
+ * more entries could be retrieved. */\r
+ return NULL;\r
+ }\r
+# endif\r
+\r
+ _setdirname (dirp);\r
+ assert (dirp->dirent_filled == 0);\r
+ }\r
+ return &dirp->current;\r
+}\r
+\r
+\r
+/*\r
+ * <function name="closedir">\r
+ * <intro>close directory stream.\r
+ * <syntax>int closedir (DIR *dirp);\r
+ *\r
+ * <desc>Close directory stream opened by the `opendir' function. Close of\r
+ * directory stream invalidates the DIR structure as well as previously read\r
+ * dirent entry.\r
+ *\r
+ * <ret>The function typically returns 0 on success and -1 on failure but\r
+ * the function may be declared to return void on same systems. At least\r
+ * Borland C/C++ and some UNIX implementations use void as a return type.\r
+ * The dirent wrapper tries to define VOID_CLOSEDIR whenever closedir is\r
+ * known to return nothing. The very same definition is made by the GNU\r
+ * autoconf if you happen to use it.\r
+ *\r
+ * The global `errno' variable will set to EBADF in case of error.\r
+ * </function>\r
+ */\r
+static int\r
+closedir (DIR *dirp)\r
+{ \r
+ int retcode = 0;\r
+\r
+ /* make sure that dirp points to legal structure */\r
+ assert (dirp != NULL);\r
+ if (dirp == NULL) {\r
+ errno = EBADF;\r
+ return -1;\r
+ }\r
+ \r
+ /* free directory name and search handles */\r
+ if (dirp->dirname != NULL) free (dirp->dirname);\r
+\r
+#if defined(DIRENT_WIN32_INTERFACE)\r
+ if (dirp->search_handle != INVALID_HANDLE_VALUE) {\r
+ if (FindClose (dirp->search_handle) == FALSE) {\r
+ /* Unknown error */\r
+ retcode = -1;\r
+ errno = EBADF;\r
+ }\r
+ }\r
+#endif \r
+\r
+ /* clear dirp structure to make sure that it cannot be used anymore*/\r
+ memset (dirp, 0, sizeof (*dirp));\r
+# if defined(DIRENT_WIN32_INTERFACE)\r
+ dirp->search_handle = INVALID_HANDLE_VALUE;\r
+# endif\r
+\r
+ free (dirp);\r
+ return retcode;\r
+}\r
+\r
+\r
+/*\r
+ * <function name="rewinddir">\r
+ * <intro>rewind directory stream to the beginning\r
+ * <syntax>void rewinddir (DIR *dirp);\r
+ *\r
+ * <desc>Rewind directory stream to the beginning so that the next call of\r
+ * readdir() returns the very first directory entry again. However, note\r
+ * that next call of readdir() may not return the same directory entry as it\r
+ * did in first time. The directory stream may have been affected by newly\r
+ * created files.\r
+ *\r
+ * Almost every dirent implementation ensure that rewinddir will update\r
+ * the directory stream to reflect any changes made to the directory entries\r
+ * since the previous ``opendir'' or ``rewinddir'' call. Keep an eye on\r
+ * this if your program depends on the feature. I know at least one dirent\r
+ * implementation where you are required to close and re-open the stream to\r
+ * see the changes.\r
+ *\r
+ * <ret>Returns nothing. If something went wrong while rewinding, you will\r
+ * notice it later when you try to retrieve the first directory entry.\r
+ */\r
+static void\r
+rewinddir (DIR *dirp)\r
+{ \r
+ /* make sure that dirp is legal */\r
+ assert (dirp != NULL);\r
+ if (dirp == NULL) {\r
+ errno = EBADF;\r
+ return;\r
+ }\r
+ assert (dirp->dirname != NULL);\r
+ \r
+ /* close previous stream */\r
+#if defined(DIRENT_WIN32_INTERFACE)\r
+ if (dirp->search_handle != INVALID_HANDLE_VALUE) {\r
+ if (FindClose (dirp->search_handle) == FALSE) {\r
+ /* Unknown error */\r
+ errno = EBADF;\r
+ }\r
+ }\r
+#endif\r
+\r
+ /* re-open previous stream */\r
+ if (_initdir (dirp) == 0) {\r
+ /* initialization failed but we cannot deal with error. User will notice\r
+ * error later when she tries to retrieve first directory enty. */\r
+ /*EMPTY*/;\r
+ }\r
+}\r
+\r
+\r
+/*\r
+ * Open native directory stream object and retrieve first file.\r
+ * Be sure to close previous stream before opening new one.\r
+ */\r
+static int\r
+_initdir (DIR *dirp)\r
+{ \r
+ assert (dirp != NULL);\r
+ assert (dirp->dirname != NULL);\r
+ dirp->dirent_filled = 0;\r
+\r
+# if defined(DIRENT_WIN32_INTERFACE)\r
+ /* Open stream and retrieve first file */\r
+ dirp->search_handle = FindFirstFile (dirp->dirname, &dirp->current.data);\r
+ if (dirp->search_handle == INVALID_HANDLE_VALUE) {\r
+ /* something went wrong but we don't know what. GetLastError() could\r
+ * give us more information about the error, but then we should map\r
+ * the error code into errno. */\r
+ errno = ENOENT;\r
+ return 0;\r
+ }\r
+\r
+# elif defined(DIRENT_MSDOS_INTERFACE)\r
+ if (_dos_findfirst (dirp->dirname,\r
+ _A_SUBDIR | _A_RDONLY | _A_ARCH | _A_SYSTEM | _A_HIDDEN,\r
+ &dirp->current.data) != 0)\r
+ {\r
+ /* _dos_findfirst and findfirst will set errno to ENOENT when no \r
+ * more entries could be retrieved. */\r
+ return 0;\r
+ }\r
+# endif\r
+\r
+ /* initialize DIR and it's first entry */\r
+ _setdirname (dirp);\r
+ dirp->dirent_filled = 1;\r
+ return 1;\r
+}\r
+\r
+\r
+/*\r
+ * Return implementation dependent name of the current directory entry.\r
+ */\r
+static const char *\r
+_getdirname (const struct dirent *dp)\r
+{\r
+#if defined(DIRENT_WIN32_INTERFACE)\r
+ return dp->data.cFileName;\r
+ \r
+#elif defined(DIRENT_USE_FFBLK)\r
+ return dp->data.ff_name;\r
+ \r
+#else\r
+ return dp->data.name;\r
+#endif \r
+}\r
+\r
+\r
+/*\r
+ * Copy name of implementation dependent directory entry to the d_name field.\r
+ */\r
+static void\r
+_setdirname (struct DIR *dirp) {\r
+ /* make sure that d_name is long enough */\r
+ assert (strlen (_getdirname (&dirp->current)) <= NAME_MAX);\r
+ \r
+ strncpy (dirp->current.d_name,\r
+ _getdirname (&dirp->current),\r
+ NAME_MAX);\r
+ dirp->current.d_name[NAME_MAX] = '\0'; /*char d_name[NAME_MAX+1]*/\r
+}\r
+ \r
+# ifdef __cplusplus\r
+}\r
+# endif\r
+# define NAMLEN(dp) ((int)(strlen((dp)->d_name)))\r
+\r
+#else\r
+# error "missing dirent interface"\r
+#endif\r
+\r
+\r
+#endif /*DIRENT_H*/\r
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